Thomas freeman nott finch



v(No Model.)

T. P. N. PINCE. CARRIAGE AXLE B0X.

Patenteddug. 19, 1890.

- UNITED STATES 'PATENT' OEE-ICE.

THOMAS FREEMAN NOTT FINCH, OF WORCESTER, ASSIGNOR TO GEORGE HENRYWILLIAMSON, OF GRANTA LODGE, MALVERN, ENGLAND.

vCARRIAG E-AxLE Box.

SPECIFICATION forming part 0f Letters Patent N0. 434,824, dated August19, 1890.

Application filed May 9, 1890. Serial No. 351.181. (No model.)

To all whom it may concern.-

Be it known that I, THOMAS FREEMAN NoTT FINCH, of the city of Vorcester,England, a subject of the Queen of Great Britain, have invented certainnew and useful Improvements in Axle-Boxes and in Attaching Axle- Boxesto the Axles of "Common Road-Oarriages; and I do hereby declare that thefollowing is a full, clear, and exact description Vof the invention,which will enable ot-hers skilled in the art to which it appertains tomake and use the same.

My invention has reference in part to improvements on the invention forwhich Letters Patent of the United States were granted to me datedNovember 20, 1888, No. 393,328;

and my said invention consistsof the im-y ing of the rubbing parts ofthe axle-box and axle is very efficiently performed and the oilchamberexpeditiously and economically filled with the lubricating-oil.

My said invention further consists of the improvements, hereinafterdescribed, and illustrated in theaccompanying drawings, in attachingaxle-boxes to carriage-axles provided with xed or permanentspring-flaps. This part of my invention is specially applicable tocarriage-axles in which the springiaps are made in one piece with theaxle by forging or are shrunk on the axle, so as to form a permanentpart thereof, but is also applicable to axles in which the spring-flapsare made in halves or parts and are attached to the axles by ilanges andscrew-bolts and nuts.

Figure 1 represents in longitudinal section an axle-box constructed andattached to the carriageaxle` according to my invention. Fig. 2represents an end elevation taken at the cap end of the axle-box. Fig. 3represents an end elevation after the outer or closing screw-cap hasbeen removed, and Fig. 4 represents an end elevation after the innerscrew-cap forming a portion of the oil-chamber has been removed. Fig. 5represents in front elevation and side elevation detached thescrew-collar by which the axle-box is attached to the axle. Fig. 6represents in front l and side elevation the two parts of which the saidscrew-collar is composed and also one of the parts in plan. Fig. 7represents in side elevation the axle and axle-box before the two capsat the front of the axle-box and the iixing screw-collar at the rear ofthe axle-box have been .fully screwed in their places; and Fig. 8represents a cross-section of the axle and axle-box, taken on the line aa, Fig. 1.

The same letters of reference indicate the same parts in the severalfigures ot` the drawings.

h is the axle-box, and cis the arm of the axle, the conical shoulder don the said arm bcaring'against the inner conical end of the axle-box.

'e is the spring-flap, niadein one piece with or shrunk upon or boltedto the enlarged part c2 ofthe axle.

The lubricating of the rubbing parts of the axle-box and axle iseffected by oil supplied from the oil-chamber f, made at the outer orfront end of the axle-box. This oil-chamber f is made partly in theaxle-box and partly in the inner screw-cap g, the said inner screwcap gbeing screwed on the exterior of the axle-box b, and also fixed by theange g2 to the hub of the carriage-wheel. In the axis of the inner cap gis a hole h, through which the oil-chamberf is iilled to the levelindicated. The filling-hole h of the oil-chamber is closed by thesupplementary or outer screwcap al, covering the end of the inner cap gand screwed on the exterior of the said inner cap, as represented inFigs. 1 and 7. The oil in the chamber f passes by the longitudinalpassages lc 7c in the axle-box (see Figs. l and 8) to therubbing-surfaces of the axle-box and axle. These longitudinaloil-passages constitute no part of my present invention. By

the axle-box a constant supply of lubricant is conveyed to therubbing-surfaces, and the iilling of the oil-chamber by the combinationofthe parts represented is readily eiected without waste of thelubricant.

In fixing the axle-box to the enlarged part c2 of the axle carrying thespring-flap e, Iprovide the interior of the head h2 of the axlebox witha screw-thread, and I use a fixing IOO the use of the oil-chamber f atthe front of screw-collar Z Zim m2 of thekind represented in Figs. l, 5,6, and 7. The said Screw-collar is made in two symmetrical halves, soconstructed that they can be passed onto the axle from opposite sidesand engaged together' s0 as to form a complete ring or collar having ascrewed periphery. Each half of the collar has a forked form, as bestseen in Fig. 6, for passing it onto the axle from opposite sides, and aportion of one face of each half-collar is out away, so as to leave ablock or thick part Z m on opposite faces of the half-collars. The facesof the thick parts Z m of the halfcollars are of a dovetail figure, (seethe righthand plan view of Fig. 6,) and the faces of the branches Z2 m2have a corresponding figure to take upon the dovetail parts Zm. v

lVhen the separated half-collars Z Z2 'm m2 are engaged together, thebranches Z2 m2, respectively, of each half-collar bear against and seatthemselves by a sliding motion on the faces of the thick dovetail partsZ m, stops p p limiting the distance to which the halfcollars can slideupon one another. By the engagement of the forked and dovetailed halvesof the collar a complete collar or ring screwed on its periphery is madeto encircle the axle, which screw-collar is screwed into the internalscrew of the head b2 of the axlebox, so as to secure the axle-box to theaxle. By means of a set-screw q, (see Fig. 1,) made to bear against aleather washer at the back of the conical shoulder (Z on the axle, thescrew-collar Z Z2 m m2 is so forced backward as to make its threads bindtightly in Ythose of the internal screw in the head b2 of the screw-box,and thus lock the two parts securely together. By releasing the pressureof the set-screw q the screw-collar is unfastcned and may be turned inthe internal screw of the axle-box head for removing it from theaxle-box.

Having now particularly described and ascertained the nature of myinvention and the manner of performing the same, I declare that I claimas my inventionl. The combination, with the axle-box and axle, of a mainscrew-cap screwed upon the outer end of the axle-box and having theouter Vertical wall provided with an axiallyarranged filling-orifice, asupplemental screwcap screwed upon the main screw-cap to close the axialfilling-orifice in the vertical wall thereof, and an oil-chamber formedpartly in the main screw-cap and partly in the outer end of the axle-boxand extending longitudinally therealong between said axle-box and theaxle, substantially as described.

2. The combination, with a shouldered axle and an axle-box having ascrew-socket at its inner end, of the axle-retaining nut consisting oftwo similar half-collars, each having thick dovetailed portions Z or mand two branches Z2 or m2, extending parallel to each other on theiradjacent faces and dovetailed in correspondence, so that the twosections when slid one upon the other in parallel lines are interlockedtogether against lateral movement, substantially as described.

3. The combination, with a shouldered axle and an axle-box having ascrew-socket at its inner end, of the axle-retainingnut composed of twohalf-collars, each formed with the thick threaded portion Z or m,located centrally between two branches Z2 or m2, which have their innerfaces extending parallel to each other, and each provided With thelateral stopshoulder p, substantially as described.

THOMAS FREEMAN NO'IT FINCII. [1.. 8.]

Witnesses:

SAML. SOUTHALL, EDWD. RIGG.

